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BS EN 593:2017

BS EN 593:2017

$167.15

Industrial valves. Metallic butterfly valves for general purposes

Published By Publication Date Number of Pages
BSI 2017 38
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This European Standard specifies minimum general requirements for butterfly valves having metallic bodies for use with all type of pipe end connections (e.g. wafer, lug, flange, butt welding) and used for isolating, regulating or control applications. The PN and Class ranges are: – PN 2,5; PN 6; PN 10; PN 16; PN 25; PN 40; PN 63; PN 100; PN 160; – Class 150; Class 300; Class 600; Class 900. The size range is: – DN 20; DN 25; DN 32; DN 40; DN 50; DN 65; DN 80; DN 100; DN 125; DN 150; DN 200; DN 250; DN 300; DN 350; DN 400; DN 450; DN 500; DN 600; DN 700; DN 750; DN 800; DN 900; DN 1 000; DN 1 050; DN 1 100; DN 1 200; DN 1 400; DN 1 500; DN 1 600; DN 1 800; DN 2 000; DN 2 200; DN 2 400; DN 2 600; DN 2 800; DN 3 000; DN 3 200; DN 3 400; DN 3 600; DN 3 800; DN 4 000. DN 750 and DN 1 050 are used only for Class 150 and Class 300. Intermediate DNs are allowed upon agreement between manufacturer and customer. For valves subject to European legislation on pressure equipment, EN 16668 applies together with this European Standard. For industrial process control valves, EN 1349 and EN 60534 2 1 apply together with this European Standard. For water supply application, EN 1074 1 and EN 1074 2 apply together with this European Standard. NOTE 1 Butterfly valves for water supply application do not comply with Annex ZA and are not CE marked because they are excluded from the pressure equipment European legislation. NOTE 2 The range of DN, applicable to each PN, for wafer and wafer lug valve types is as given in the appropriate part of EN 1092 for Type 11 flanges for the applicable material. The range of DN, applicable to each PN, for flanged valve types is as given in the appropriate part of EN 1092 for Type 21 flanges for the applicable material. The correspondence between DN and NPS is given for information in Annex D.

PDF Catalog

PDF Pages PDF Title
2 National foreword
7 1 Scope
2 Normative references
9 3 Terms and definitions
10 4 Design requirements
4.1 General
12 4.2 Shell
4.3 Body
4.3.1 General
4.3.2 End connections
15 4.4 Obturator (disc)
4.5 Seat seal
4.6 Driving shaft
16 4.7 Shaft seal
4.8 Optional design features
17 4.9 Materials
4.9.1 Shell
4.9.2 Trim
18 4.9.3 Corrosion protection
4.10 Pressure/temperature ratings
19 4.11 Dimensions and tolerances
4.11.1 Face-to-face and end-to-end dimensions
4.11.2 Flange body ends
4.11.3 Wafer bodies
4.11.4 Butt welding ends
4.12 Operation
4.12.1 Operational capability
4.12.2 Operating device
4.12.2.1 Direct manual actuation
20 4.12.2.2 Direct actuation by power actuator
4.12.2.3 Gear actuation
4.12.2.4 Sizing the operating element
4.12.2.5 Direction of operation
4.12.2.6 Valve supplied bare shaft
21 4.13 Permanent joining
4.13.1 Welding
4.13.2 Non-destructive tests
4.13.3 Heat treatment
4.14 Functional characteristics and performances
4.14.1 Application
4.14.2 Design strength
22 4.14.3 Flow characteristics
4.14.3.1 Flow velocity
4.14.3.2 Flow coefficient Kv
5 Final assessment
5.1 General
23 5.2 Additional tests
5.2.1 Shell tightness
5.2.2 Seat tightness
5.2.3 Optional tests
6 Designation
7 Marking and preparation for storage and transportation
7.1 Marking
7.1.1 Mandatory marking
24 7.1.2 Supplementary marking
7.2 Preparation for storage and transportation
25 Annex A (informative)Information to be supplied by the customer
27 Annex B (informative)Trim material list
28 Annex C (informative)Environmental corrosion protection
29 Annex D (informative)Correspondence between DN and NPS
31 Annex E (informative)Example for valve shaft calculation
E.1 General
32 E.2 Calculation
E.2.1 Shear stress
E.2.2 Combined shear stress (at valve bearing) (section 2-2)
E.2.3 Combined tensile stress at seating due to torsion and bending (section 2-2)
33 E.2.4 Shear stress at reduced area (sections 1-1, 3-3, 4-4)
E.3 Examples of influence of flow velocity/hydrodynamic torques for shaft sizing
36 Annex ZA (informative)Relationship between this European Standard and the essential requirements of Directive 2014/68/EU (Pressure Equipment Directive) aimed to be covered

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BS EN 593:2017
$167.15